Which hierarchical layer has functions such as High availability, port security, and rate limiting?

Which hierarchical layer has functions such as High availability, port security, and rate limiting?

A.
Core

B.
Access

C.
Network

D.
Distribution

Explanation:
Explanation

Access Layer
The access layer provides user access to local segments on the network. The access layer is characterized by switched LAN segments in a campus environment. Microsegmentation using LAN switches provides high bandwidth to workgroups by reducing the number of devices on Ethernet segments. Functions of the access layer include the following:

Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 2